TWI812125B - Antenna device and antenna equipment with touch function - Google Patents

Abstract

The invention provides an antenna device with touch function, in particular a chip antenna. The antenna device comprises a dielectric substrate, a first conductive layer, a second conductive layer and a touch conductive layer. The first conductive layer is disposed inside the dielectric substrate, and the second conductive layer is disposed inside or at the bottom of the dielectric substrate. The first conductive layer and the second conductive layer are partially overlapped to form an overlapping area. The first conductive layer is connected to a signal feeding terminal, and the second conductive layer is connected to a ground terminal. The touch conductive layer is arranged inside or on top of the dielectric substrate, and is connected to a touch signal transmission end. The function of the antenna device can be increased to be used to sense touch signals.

Description

Antenna devices and antenna equipment with touch function

The present invention provides an antenna device with a touch function, particularly a chip antenna, which mainly integrates a touch conductive layer into the antenna device so that the antenna device can be used to sense touch signals.

With the popularization of wireless communication technology, most portable electronic devices nowadays are usually equipped with mobile communication modules. Mobile phones, smart phones and laptops can use mobile communication technology to transmit voice, information, video and other data over long distances, greatly improving the convenience of using electronic devices.

In addition, two electronic devices can also be connected through short-distance communication modules. For example, a Bluetooth transmission module can be installed in a mobile phone and a headset. After the mobile phone and headset complete Bluetooth pairing and connection, audio and control can be transmitted through Bluetooth. signal.

Whether it is a long-distance mobile communication module or a short-distance communication module, antennas are necessary equipment in the communication module. For portable electronic devices, stamped metal antennas, printed circuit board antennas or chip antennas are usually chosen to reduce the size of the antenna and the portable electronic device.

In order to further improve the prior art, the present invention proposes an antenna device with a touch function, which mainly disposes a touch conductive layer in a chip antenna, so that the antenna device can be used not only to transmit wireless signals, but also to sense touch signals. . Through the antenna device of the present invention, additional functions of the antenna device can be added, and the size of electronic equipment with touch functions can also be reduced.

An object of the present invention is to provide an antenna device with a touch function, which has a dielectric substrate, a first conductive layer, a second conductive layer and a touch conductive layer. The first conductive layer, the second conductive layer and the touch conductive layer are disposed on the surface or inside the dielectric substrate. The first conductive layer and the second conductive layer partially overlap and are used to transmit wireless signals.

The touch conductive layer can be used as a capacitive touch electrode and is connected to a controller through at least one touch signal transmission terminal. When the human body approaches the touch conductive layer, the capacitance changes, and the controller senses the position of the touch based on the current change on the touch conductive layer. The touch conductive layer may or may not overlap the first conductive layer and the second conductive layer, as long as it does not affect the signal transmission of the first conductive layer and the second conductive layer.

After the electronic device is installed with the antenna device of the present invention, it can transmit wireless signals through the antenna device and sense touch signals through the antenna device. There is no need to set up an additional touch interface in the electronic device, which is beneficial to reducing the cost of electronic equipment. The size and production cost of the equipment.

In addition, in the process of manufacturing electronic equipment, the antenna device of the present invention only needs to be directly placed on the circuit board of the electronic equipment, and the antenna device and the touch interface can be set up at the same time. There is no need to install traditional antennas and touch interfaces on the circuit boards of electronic devices respectively, which can greatly simplify the manufacturing process of electronic devices and improve production efficiency.

An object of the present invention is to provide an antenna device with a touch function, in which the first conductive layer, the second conductive layer and the touch conductive layer can be made of the same material and have similar thicknesses. Therefore, in the process of manufacturing the antenna device, only the manufacturing steps of traditional chip antennas are needed to complete the manufacturing of the antenna device with touch function according to the present invention, without the need for additional manufacturing equipment.

The antenna device of the present invention can be a chip antenna in a Bluetooth communication module. During production, only a large area of conductive layer is additionally provided on the dielectric substrate as a touch conductive layer to complete the production of the antenna device. , without increasing the manufacturing cost of the antenna device.

In order to achieve the above objectives, the present invention proposes an antenna device with a touch function, including: a dielectric substrate; a first conductive layer, which is disposed on the surface or inside the dielectric substrate and is electrically connected to a signal feed Input terminal; a second conductive layer disposed on the surface or inside the dielectric substrate and electrically connected to a ground terminal, wherein the first conductive layer and the second conductive layer partially overlap and form an overlapping area; and a contact The conductive layer is disposed on the surface or inside the dielectric substrate and is electrically connected to at least one touch signal transmission end.

The present invention proposes another antenna device with a touch function, including: a dielectric base material; a first conductive layer disposed on the surface or inside the dielectric base material; and a second conductive layer disposed on the dielectric base material. The surface or interior of the dielectric substrate, wherein the first conductive layer and the second conductive layer partially overlap and form a first overlapping area; a third conductive layer is provided on the surface and interior of the dielectric substrate, wherein the second conductive layer and the third conductive layer The three conductive layers partially overlap and form a second overlapping area; a plurality of ground terminals are respectively connected to the first conductive layer, the second conductive layer and the third conductive layer; a signal feed terminal is connected to the third conductive layer; and a The touch conductive layer is disposed on the surface or inside the dielectric substrate and connected to at least one touch signal transmission terminal.

The present invention proposes an antenna device with a touch function, including: a circuit board including a signal feed terminal, a ground terminal and at least one touch signal transmission terminal; and an antenna device disposed inside the circuit board or on the circuit board surface, and includes: a dielectric base material; a first conductive layer disposed on the surface or inside the dielectric base material and electrically connected to the signal feed end; a second conductive layer disposed on the dielectric base material The surface or interior of the dielectric substrate is electrically connected to the ground terminal, wherein the first conductive layer and the second conductive layer partially overlap and form an overlapping area; and a touch conductive layer is provided on the surface or interior of the dielectric substrate, and Electrically connected to the touch signal transmission end.

In the antenna device with touch function, the touch conductive layer overlaps the first conductive layer and the second conductive layer, and the first conductive layer is located between the touch conductive layer and the second conductive layer.

In the antenna device with touch function, the area of the touch conductive layer is larger than the areas of the first conductive layer and the second conductive layer.

In the antenna device with touch function, the touch conductive layer does not overlap the first conductive layer and the second conductive layer.

The antenna device with touch function includes a first connection unit connected to the first conductive layer and the signal feed terminal; a second connection unit connected to the second conductive layer and the ground terminal; and at least a third connection unit connected to the ground terminal. Touch control conductive layer and touch signal transmission terminal.

In the antenna device with touch function, the first connection unit, the second connection unit and the third connection unit penetrate the dielectric substrate.

In the antenna device with touch function, the circuit board includes a clear area, and the antenna device, signal feed end, ground end and touch signal transmission end are located in the clear area.

The antenna device with touch function includes a first connection unit connected to the first conductive layer and the signal feed terminal; a second connection unit connected to the second conductive layer and the ground terminal; and at least a third connection unit connected to the ground terminal. Touch control conductive layer and touch signal transmission terminal.

Please refer to FIGS. 1 and 2 , which are respectively a three-dimensional perspective view and a side perspective view of an antenna device 10 with a touch function according to an embodiment of the present invention. As shown in the figure, the antenna device 10 with touch function may be a chip antenna and includes a dielectric substrate 11, at least a first conductive layer 13, at least a second conductive layer 15 and at least a touch Control conductive layer 17 , wherein the first conductive layer 13 , the second conductive layer 15 and the touch conductive layer 17 are disposed on the surface or inside of the dielectric substrate 11 .

In an embodiment of the invention, the dielectric substrate 11 includes a first surface 111 and a second surface 113 . The first surface 111 and the second surface 113 may be two opposite surfaces of the dielectric substrate 11. For example, the first surface 111 and the second surface 113 face each other, where the first surface 111 is the lower surface, and the second surface 113 is upper surface.

In an embodiment of the present invention, the second conductive layer 15 can be disposed on the first surface 111 of the dielectric substrate 11 , the touch conductive layer 17 can be disposed on the second surface 113 of the dielectric substrate 11 , and the first conductive layer 13 is disposed inside the dielectric substrate 11 , for example, the first conductive layer 13 can be located between the second conductive layer 15 and the touch conductive layer 17 . The touch conductive layer 17 can be disposed on the surface or inside the dielectric substrate 11 . The term "located/disposed inside" means that the touch conductive layer 17 can be embedded in the dielectric material that constitutes the dielectric substrate 11 .

The first conductive layer 13, the second conductive layer 15 and the touch conductive layer 17 of the present invention are made of materials with conductive properties, such as metal, while the dielectric substrate 11 is made of insulating or magnetic materials. formed and used to isolate the first conductive layer 13, the second conductive layer 15 and the touch conductive layer 17.

Part of the first conductive layer 13 and part of the second conductive layer 15 overlap in the thickness direction of the dielectric substrate 11 (the direction in which the first surface 111 points to the second surface 113 ), and form a gap in the dielectric substrate 11 . Overlap area 12.

The resonant frequency of the antenna device 10 is positively correlated with the distance between the first conductive layer 13 and the second conductive layer 15 , the reciprocal of the area of the overlapping region 12 and the reciprocal of the dielectric constant of the dielectric substrate 11 .

The first conductive layer 13 is electrically connected to a signal feed terminal 23, the second conductive layer 15 is electrically connected to the ground terminal 25, and the touch conductive layer 17 is electrically connected to a touch signal transmission terminal 27. In another embodiment of the present invention, the first conductive layer 13 can also be connected to a ground terminal.

As shown in FIG. 3 , the antenna device 10 can be connected to a circuit board 20 , for example, disposed on the circuit board 20 of an electronic device, and form an antenna device 1 . The circuit board 20 has a clear area 21. The clear area 21 is an area on the circuit board 20 where no other circuit components are installed. The antenna device 10 is disposed in the clear area 21 so as to isolate the antenna device 10 from other circuit components on the circuit board 20 through the clear area 21 .

In one embodiment of the present invention, a signal feed terminal 23, a ground terminal 25 and at least one touch signal transmission terminal 27 can be disposed in the clearance area 21, wherein the signal feed terminal 23 is connected to the first conductive layer of the antenna device 10 13. The ground terminal 25 is connected to the second conductive layer 15 of the antenna device 10, and the touch signal transmission terminal 27 is connected to the touch conductive layer 17.

Specifically, the antenna device 10 with touch function includes a first connection unit 131 , a second connection unit 151 and a third connection unit 171 . The first conductive layer 13 can be electrically connected to the signal feed terminal 23 through the first connection unit 131, the second conductive layer 15 can be electrically connected to the ground terminal 25 through the second connection unit 151, and the touch conductive layer 17 can be electrically connected to the ground terminal 25 through the third connection unit 151. The connection unit 171 is electrically connected to the touch signal transmission terminal 27 .

In an embodiment of the present invention, the first connection unit 131 , the second connection unit 151 and the third connection unit 171 can penetrate part or all of the dielectric substrate 11 . For example, the first connection unit 131 , the second connection unit 151 and the third connection unit 171 can extend to the first surface 111 of the dielectric substrate 11 and connect the signal feed end 23 through the first surface 111 of the dielectric substrate 11 , the ground terminal 25 and the touch signal transmission terminal 27; the other ends of the first connection unit 131, the second connection unit 151 and the third connection unit 171 are respectively connected to the first conductive layer 13, the second conductive layer 15 and the touch conductive layer. 17.

In another embodiment, the first connection unit 131 , the second connection unit 151 and the third connection unit 171 may be disposed along the surface or side surface of the dielectric substrate 11 .

In the drawings of the present invention, the first connection unit 131, the second connection unit 151 and the third connection unit 171 are straight lines, but they may also be bent curves in actual applications.

In addition, the first connection unit 131 , the second connection unit 151 and the third connection unit 171 are not essential components of the present invention. For example, when the second conductive layer 15 is disposed on the first surface 111 of the dielectric substrate 11 , the second conductive layer 15 is disposed on the first surface 111 of the dielectric substrate 11 . The layer 15 can be directly connected to the ground terminal 25 on the circuit board 20 , and there is no need to dispose the second connection unit 151 between the second conductive layer 15 and the ground terminal 25 .

In practical applications, when the area of the touch conductive layer 17 is larger, the touch sensing area and sensitivity of the antenna device 10 can be increased. Therefore, the area of the touch conductive layer 17 according to the present invention can be larger than that of the first conductive layer 13 and area of the second conductive layer 15 .

In an embodiment of the present invention, as shown in FIG. 1 , the touch conductive layer 17 can completely cover the second surface 113 of the dielectric substrate 11 and overlap the first conductive layer 13 and the second conductive layer 15 , where The first conductive layer 13 is located between the touch conductive layer 17 and the second conductive layer 15 .

In the above embodiment of the present invention, as shown in FIGS. 1 to 3 , the first conductive layer 13 , the second conductive layer 15 and the touch conductive layer 17 are approximately parallel to each other. However, in actual applications, it is only necessary to make the first conductive layer 13 and the second conductive layer 15 parallel, and the touch conductive layer 17 does not necessarily need to be parallel to the first conductive layer 13 and the second conductive layer 15. For example, the touch conductive layer 17 There is an included angle with the first conductive layer 13 and/or the second conductive layer 15 , wherein the extension line of the touch conductive layer 17 may intersect with the extension line of the first conductive layer 13 and/or the second conductive layer 15 .

Specifically, as shown in FIG. 4 , when the dielectric substrate 11 is a rectangular parallelepiped, the first conductive layer 13 and the second conductive layer 15 can be parallel to the first surface 111 and the second surface 113 of the dielectric substrate 11 , for example The lower surface and the upper surface, and the touch conductive layer 17 can be disposed on the side surface 115 perpendicular to the first surface 111 and the second surface 113, so that the touch conductive layer 17 is perpendicular to the first conductive layer 13 and the second conductive layer 15 .

As shown in FIG. 5 , the number of touch conductive layers 17 may be two, and they are respectively disposed on two side surfaces 115 of the dielectric substrate 11 , such as the two facing side surfaces. In addition, the two touch conductive layers 17 can be electrically connected through a conductive connection unit 173. For example, the two touch conductive layers 17 are respectively disposed on the two facing side surfaces 115 of the dielectric substrate 11, and the conductive connection unit 173 is disposed on the second surface 113 and connects the two touch conductive layers 17 .

In another embodiment of the present invention, as shown in FIG. 6 , the touch conductive layer 17 only covers part of the second surface 113 of the dielectric substrate 11 and does not overlap the first conductive layer 13 and the second conductive layer 15 .

The touch conductive layer 17 can be used as a capacitive touch electrode and is connected to a controller through the touch signal transmission terminal 27 . When the human body approaches the touch conductive layer 17 , the capacitance changes, and the controller can sense the touch position based on the current change on the touch conductive layer 17 .

Specifically, the touch conductive layer 17 can be connected to the controller through a plurality of touch signal transmission terminals 27. For example, the touch signal transmission terminals 27 are respectively provided at the four corners of the touch conductive layer 17, and the controller can be connected from the four corners. The difference in current changes received by the touch signal transmission terminal 27 is used to calculate the touch position.

As shown in FIG. 7 , the touch conductive layer 17 can be disposed inside the dielectric substrate 11 , wherein the touch conductive layer 17 has the dielectric substrate 11 on both sides. In an embodiment of the present invention, a first dielectric substrate 112 can be disposed below the touch conductive layer 17 , and a second dielectric substrate 114 can be disposed above the touch conductive layer 17 . The first dielectric substrate 112 The second dielectric substrate 114 can be made of different materials and have different dielectric coefficients or thicknesses. For example, the dielectric coefficient of the second dielectric substrate 114 is greater than that of the first dielectric substrate 112 .

Please refer to FIG. 8 , which is a three-dimensional perspective view of an antenna device with a touch function according to another embodiment of the present invention. As shown in the figure, the antenna device 30 with touch function can be a chip antenna and includes a dielectric substrate 11, a first conductive layer 13, a second conductive layer 15, a third conductive layer 37 and at least one Touch conductive layer 17 , wherein the first conductive layer 13 , the second conductive layer 15 , the third conductive layer 37 and the touch conductive layer 17 are disposed on the surface or inside of the dielectric substrate 11 .

In an embodiment of the present invention, the dielectric substrate 11 includes a first surface 111 and a second surface 113. For example, the first surface 111 is opposite to the second surface 113, where the first surface 111 is the lower surface, and the second surface 111 is the lower surface. Surface 113 is the upper surface.

In one embodiment of the present invention, the second conductive layer 15 is disposed on the first surface 111 of the dielectric substrate 11 , the touch conductive layer 17 is disposed on the second surface 113 of the dielectric substrate 11 , and the first conductive layer 13 And the third conductive layer 37 is disposed inside the dielectric substrate 11 .

In addition, a portion of the first conductive layer 13 overlaps a portion of the second conductive layer 15 and forms a first overlapping region 121 , and a portion of the third conductive layer 37 overlaps a portion of the second conductive layer 15 and forms a first overlapping region 121 . The two overlapping areas 123 enable the antenna device 30 to have two different resonant frequencies.

In practical applications, the distance between the first conductive layer 13 and the second conductive layer 15 of the antenna device 30, the area of the first overlapping region 121, and the distance between the third conductive layer 37 and the second conductive layer 15 can be further adjusted. , the area of the second overlapping region 123 and the dielectric constant of the dielectric substrate 11 to change the first resonant frequency and the second resonant frequency of the antenna device 30 .

As shown in FIG. 8 , the touch conductive layer 17 according to the embodiment of the present invention can completely cover the second surface 113 of the dielectric substrate 11 and is connected with the first conductive layer 13 , the second conductive layer 15 and the third conductive layer 37 Overlapping, for example, the first conductive layer 13 and the third conductive layer 37 are located between the second conductive layer 15 and the touch conductive layer 17 . In another embodiment of the present invention, the touch conductive layer 17 only covers part of the second surface 113 of the dielectric substrate 11 and does not overlap the first conductive layer 13 , the second conductive layer 15 and the third conductive layer 37 .

In practical applications, the first conductive layer 13 , the second conductive layer 15 and the third conductive layer 37 of the antenna device 30 can be respectively connected to a ground terminal, for example, the first conductive layer 13 , the second conductive layer 15 and the third conductive layer 37 are respectively connected to the first ground terminal 33 , the second ground terminal 35 and the third ground terminal 371 , wherein the third conductive layer 37 is also connected to a signal feed terminal 373 . The touch conductive layer 17 is connected to the touch signal transmission terminal 27 .

The above is only one of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. That is, all changes in shape, structure, characteristics and spirit described in the patent scope of the present invention may be equal to those described above. Modifications should be included in the patentable scope of the present invention.

1: Antenna equipment

10:Antenna device

11: Dielectric substrate

111: First surface

112:First dielectric substrate

113: Second surface

114: Second dielectric substrate

115:Side surface

12: Overlap area

121: First overlapping area

123: Second overlapping area

13: First conductive layer

131: First connection unit

15: Second conductive layer

151: Second connection unit

17:Touch conductive layer

171:Third connection unit

173: Conductive connection unit

20:Circuit board

21: Clearance area

23: Signal feed end

25: Ground terminal

27:Touch signal transmission terminal

30:Antenna device

33: First ground terminal

35: Second ground terminal

37:Third conductive layer

371:Third ground terminal

373: Signal feed end

[Fig. 1] is a three-dimensional perspective view of an antenna device with a touch function according to an embodiment of the present invention.

[Fig. 2] is a side perspective view of an embodiment of the antenna device with touch function of the present invention.

[Fig. 3] is a three-dimensional perspective view of an embodiment of the antenna device with touch function of the present invention.

[Fig. 4] is a three-dimensional perspective view of another embodiment of the antenna device with touch function of the present invention.

[Fig. 5] is a three-dimensional perspective view of another embodiment of the antenna device with touch function of the present invention.

[Fig. 6] is a three-dimensional perspective view of another embodiment of the antenna device with touch function of the present invention.

[Fig. 7] is a three-dimensional perspective view of another embodiment of the antenna device with touch function of the present invention.

[Fig. 8] is a three-dimensional perspective view of another embodiment of the antenna device with touch function of the present invention.

10:Antenna device

11: Dielectric substrate

12: Overlap area

13: First conductive layer

131: First connection unit

15: Second conductive layer

151: Second connection unit

17:Touch conductive layer

171:Third connection unit

23: Signal feed end

25: Ground terminal

27:Touch signal transmission terminal

Claims (12)

An antenna device with a touch function, including: a dielectric substrate; a first conductive layer, which is disposed on the surface or inside the dielectric substrate and is electrically connected to a signal feed end; and a second conductive layer , disposed on the surface or inside the dielectric substrate and electrically connected to at least one ground terminal, wherein the first conductive layer and the second conductive layer partially overlap and form an overlapping area; and a touch conductive layer, Disposed on the surface or inside the dielectric substrate and electrically connected to at least one touch signal transmission end, wherein the touch conductive layer overlaps the first conductive layer, and the first conductive layer is located on the touch conductive layer and between the second conductive layer. The antenna device with touch function as claimed in claim 1, wherein the first conductive layer is electrically connected to the ground terminal. The antenna device with touch function as claimed in claim 1, wherein the touch conductive layer overlaps the first conductive layer and the second conductive layer. The antenna device with touch function as claimed in claim 1, wherein the dielectric substrate includes at least one side surface between the first surface and the second surface, and the touch conductive layer is disposed on the dielectric substrate. This side surface of the substrate. An antenna device with a touch function includes: a dielectric base material; a first conductive layer, which is disposed on the surface or inside the dielectric base material and is electrically connected to a signal feed end; a second conductive layer disposed on the surface or inside the dielectric substrate and electrically connected to at least one ground terminal, wherein the first conductive layer and the second conductive layer partially overlap and form an overlapping area; and a The touch conductive layer is disposed on the surface or inside the dielectric substrate and is electrically connected to at least one touch signal transmission terminal, wherein the dielectric substrate includes a first dielectric substrate and a second dielectric substrate. material, the touch conductive layer is located between the first dielectric substrate and the second dielectric substrate. The antenna device with touch function as claimed in claim 1, wherein the area of the touch conductive layer is larger than the areas of the first conductive layer and the second conductive layer. An antenna device with a touch function, including: a dielectric substrate; a first conductive layer, which is disposed on the surface or inside the dielectric substrate and is electrically connected to a signal feed end; and a second conductive layer , disposed on the surface or inside the dielectric substrate and electrically connected to at least one ground terminal, wherein the first conductive layer and the second conductive layer partially overlap and form an overlapping area; and a touch conductive layer, is disposed on the surface or inside the dielectric substrate and is electrically connected to at least one touch signal transmission end; a first connection unit is connected to the first conductive layer and the signal feed end; a second connection unit is connected to the third Two conductive layers and the ground terminal; and at least one third connection unit connects the touch conductive layer and the touch signal transmission terminal. The antenna device with touch function as claimed in claim 7, wherein the first connection unit, the second connection unit and the third connection unit penetrate the dielectric substrate. An antenna device with touch functionality, including: A circuit board including a signal feed end, at least one ground end and at least one touch signal transmission end; and an antenna device disposed inside the circuit board or on the surface of the circuit board and including: a dielectric substrate ; A first conductive layer, disposed on the surface or inside the dielectric substrate, and electrically connected to the signal feed end; a second conductive layer, disposed on the surface or inside the dielectric substrate, and electrically connected Connected to the ground terminal, wherein the first conductive layer and the second conductive layer partially overlap and form an overlapping area; a touch conductive layer is disposed on the surface or inside the dielectric substrate and is electrically connected to the contact control signal transmission end; a first connection unit connects the first conductive layer and the signal feed end; a second connection unit connects the second conductive layer and the ground end; and at least a third connection unit connects the touch The conductive layer and the touch signal transmission end. The antenna device with touch function as claimed in claim 9, wherein the circuit board includes a clear area, and the antenna device, the signal feed end, the ground end and the touch signal transmission end are located in the clear area. The antenna device with touch function as claimed in claim 9, wherein the first conductive layer is electrically connected to the ground terminal. An antenna device with a touch function includes: a dielectric base material; a first conductive layer disposed on the surface or inside the dielectric base material; A second conductive layer is disposed on the surface or inside the dielectric substrate, wherein the first conductive layer and the second conductive layer partially overlap and form a first overlapping area; a third conductive layer is disposed on the On the surface and inside of the dielectric substrate, the second conductive layer and the third conductive layer partially overlap and form a second overlapping area; a plurality of ground terminals are respectively connected to the first conductive layer, the second conductive layer and The third conductive layer; a signal feed end connected to the third conductive layer; and a touch conductive layer disposed on the surface or inside the dielectric substrate and connected to at least one touch signal transmission end, wherein the The touch conductive layer overlaps the first conductive layer and the third conductive layer, and the first conductive layer and the third conductive layer are located between the second conductive layer and the touch conductive layer.

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